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import socket
import os
from sshuttle.helpers import debug1
def _notify(message):
addr = os.environ.get("NOTIFY_SOCKET", None)
if not addr or len(addr) == 1 or addr[0] not in ('/', '@'):
return False
addr = '\0' + addr[1:] if addr[0] == '@' else addr
try:
sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
except (OSError, IOError) as e:
debug1("Error creating socket to notify systemd: %s\n" % e)
return False
if not message:
return False
assert isinstance(message, bytes)
try:
return (sock.sendto(message, addr) > 0)
except (OSError, IOError) as e:
debug1("Error notifying systemd: %s\n" % e)
return False
def send(*messages):
return _notify(b'\n'.join(messages))
def ready():
return b"READY=1"
def stop():
return b"STOPPING=1"
def status(message):
return b"STATUS=%s" % message.encode('utf8')
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